А почитать слабо?
'=======================
'Adjust the parameters below
'bSrefFromMap = True ==> the area will be calculated in the projection of the Map
'bSrefFromMap = False ==> the area will be calculated in the projection of the data
bSrefFromMap = False
'unmark the desired output units
'sOutMeasure = "Acres"
'sOutMeasure = "Square Kilometers"
sOutMeasure = "Square Meters"
'sOutMeasure = "Square Miles"
Нужно изменить строки в калькуляторе:
bSrefFromMap = True
и
sOutMeasure = "Square Meters"